package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.google.gson.JsonObject;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * ClassName: OrderServiceImpl
 * Package: IntelliJ IDEA
 *
 * @author 张文豪
 * @description
 * @date 2023/8/19 10:01
 */
@Service
@Transactional
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WebSocketServer webSocketServer;

    @Transactional
    @Override
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //向订单表插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        AddressBook addressBook = addressBookMapper.selectById(ordersSubmitDTO.getAddressBookId());
        orders.setOrderTime(LocalDateTime.now());
        orders.setUserId(BaseContext.getCurrentId());
        orders.setConsignee(addressBook.getConsignee());
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setPhone(addressBook.getPhone());
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setAddress(addressBook.getDetail());
        orderMapper.insert(orders);
        //向订单明细表中插入n条数据
        LambdaQueryWrapper<ShoppingCart> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(ShoppingCart::getUserId,BaseContext.getCurrentId());
        List<ShoppingCart> shoppingCarts = shoppingCartMapper.selectList(wrapper);
        for (ShoppingCart shoppingCart : shoppingCarts) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(shoppingCart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailMapper.insert(orderDetail);
        }
        //清空购物车
        shoppingCartMapper.delete(wrapper);
        //封装vo
        OrderSubmitVO orderSubmitVO = new OrderSubmitVO();
        orderSubmitVO.setOrderNumber(orders.getNumber());
        orderSubmitVO.setId(orders.getId());
        orderSubmitVO.setOrderTime(orders.getOrderTime());
        orderSubmitVO.setOrderAmount(orders.getAmount());
        return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    @Override
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.selectById(userId);

        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
        //模拟支付
        JSONObject jsonObject = new JSONObject();
        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    @Override
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        LambdaQueryWrapper<Orders> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(Orders::getNumber,outTradeNo).eq(Orders::getUserId,BaseContext.getCurrentId());
        Orders ordersDB = orderMapper.selectOne(lambdaQueryWrapper);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.updateById(orders);
        //向客户端发送数据
        Map map = new HashMap();
        map.put("type",1);
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号：" + outTradeNo);
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    @Override
    public void reminder(Long id) {
        Orders orders = orderMapper.selectById(id);
        if(orders == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号：" + orders.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
    /**
     * 再来一单
     *
     * @param id
     */
    @Override
    public void againOrder(Long id) {
        // 查询当前用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.selectList(new LambdaQueryWrapper
                <OrderDetail>().eq(OrderDetail::getOrderId,id));

        // 将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();

            // 将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());

            return shoppingCart;
        }).collect(Collectors.toList());

        // 将购物车对象批量添加到数据库
        for (ShoppingCart shoppingCart : shoppingCartList) {
            shoppingCartMapper.insert(shoppingCart);
        }
    }

    @Override
    public void cancleOrder(OrdersCancelDTO ordersCancelDTO) throws Exception {
        Orders ordersDB = orderMapper.selectById(ordersCancelDTO.getId());
        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.updateById(orders);
    }

    @Override
    public void completeOrder(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.selectById(id);


        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.updateById(orders);
    }

    @Override
    public void rejectionOrder(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders ordersDB = orderMapper.selectById(ordersRejectionDTO.getId());
        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.updateById(orders);
    }

    @Override
    public void confirmOrder(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = orderMapper.selectById(ordersConfirmDTO.getId());
        orders.setStatus(Orders.CONFIRMED);
        orderMapper.updateById(orders);

    }

    @Override
    public OrderVO getOrderDetail(Long id) {
        Orders orders = orderMapper.selectById(id);
        // 根据id查询订单

        // 查询该订单对应的菜品/套餐明细
        List<OrderDetail> orderDetailList = orderDetailMapper.selectList(new LambdaQueryWrapper
                <OrderDetail>().eq(OrderDetail::getOrderId,orders.getId()));

        // 将该订单及其详情封装到OrderVO并返回
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    @Override
    public OrderStatisticsVO getAllStatus() {
        LocalDateTime end = LocalDateTime.of(LocalDate.now(), LocalTime.MAX);
        LocalDateTime  begin = LocalDateTime.of(LocalDate.now(),LocalTime.MIN);
        int toBeConfirmed = orderMapper.selectList(new LambdaQueryWrapper<Orders>().
                eq(Orders::getStatus, Orders.TO_BE_CONFIRMED).between(Orders::getOrderTime,begin,end)).size();
        int confirmed = orderMapper.selectList(new LambdaQueryWrapper<Orders>().
                eq(Orders::getStatus, Orders.CONFIRMED).between(Orders::getOrderTime,begin,end)).size();
        int deliveryInProgress = orderMapper.selectList(new LambdaQueryWrapper<Orders>().
                eq(Orders::getStatus, Orders.DELIVERY_IN_PROGRESS).between(Orders::getOrderTime,begin,end)).size();
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

    @Override
    public void cancleId(Long id) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.selectById(id);



        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
//        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
//            //调用微信支付退款接口
//            weChatPayUtil.refund(
//                    ordersDB.getNumber(), //商户订单号
//                    ordersDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额
//
//            //支付状态修改为 退款
//            orders.setPayStatus(Orders.REFUND);
//        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.updateById(orders);
    }

    @Override
    public PageResult pageOrder(Integer page,Integer pageSize,Integer status) {
        PageResult result = new PageResult();
        Page<Orders> myPage = new Page<>(page,pageSize,true);
        LambdaQueryWrapper<Orders> wrapper  = new LambdaQueryWrapper<>();
        wrapper.eq(Orders::getUserId,BaseContext.getCurrentId()).eq(Orders::getStatus,status);
        IPage<Orders> iPage = orderMapper.selectPage(myPage,wrapper);
        List<Orders> records = iPage.getRecords();
        List<OrderVO> list = new ArrayList<>();

        if (records != null && records.size() > 0) {
            for (Orders orders : records) {
                Long orderId = orders.getId();// 订单id

                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.selectList(new LambdaQueryWrapper
                        <OrderDetail>().eq(OrderDetail::getOrderId,orderId));

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        result.setRecords(list);
        result.setTotal(iPage.getTotal());
        return result;
    }


    @Override
    public PageResult getConditionOrders(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageResult result = new PageResult();
        Page<Orders> myPage = new Page<>(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize(),true);
        LambdaQueryWrapper<Orders> wrapper  = new LambdaQueryWrapper<>();
        wrapper.eq(Orders::getStatus,ordersPageQueryDTO.getStatus()).between(Orders::getOrderTime
        ,LocalDateTime.of(LocalDate.now(),LocalTime.MIN),LocalDateTime.of(LocalDate.now(),LocalTime.MAX));
        List<Orders> orders = new ArrayList<>();
        List<OrderVO> list = new ArrayList<>();
        if(ordersPageQueryDTO.getStatus() != null){
            IPage<Orders> iPage = orderMapper.selectPage(myPage,wrapper);
            orders = iPage.getRecords();
             list = getOrderVOList(orders);
        }else {
            orders = orderMapper.selectList(new LambdaQueryWrapper<Orders>().between(Orders::getOrderTime
                    ,LocalDateTime.of(LocalDate.now(),LocalTime.MIN),LocalDateTime.of(LocalDate.now(),LocalTime.MAX)));
            list = getOrderVOList(orders);
        }
        result.setRecords(list);
        result.setTotal(orders.size());
        return result;
    }

    @Override
    public void deliveryOrder(Long id) {
        Orders ordersDB = orderMapper.selectById(id);
        // 根据id查询订单

        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.updateById(orders);
    }
    private List<OrderVO> getOrderVOList(List<Orders> ordersList) {
        // 需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                // 将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);

                // 将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.selectList(new LambdaQueryWrapper<OrderDetail>()
                .eq(OrderDetail::getOrderId,orders.getId()));

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }
}
